Spitfire DAC/Supplier Duo

Does anyone have any experience with this low end DAC? I know it barely qualifies as "high end," but it seems as if it has a decent line-up in the internals. I'm trying to see how this may compare to Musical Fidelity's V-DAC.
Thanks for any input.
I have them and they work and sound just fine.
Thanks Depotec. Do you have the 2009 models with changed internals and better power supply, or is it the older models? Also, what are you using as a transport? I'm planning on using my Oppo Bluray BDP-83 as a transport and getting something like this DAC combo to use for 2-channel, Redbook listening.